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Poly(vinyl alcohol) Hydrogels with Broad-Range Tunable Mechanical Properties via the Hofmeister Effect

Journal Article · · Advanced Materials
 [1];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [1];  [3];  [3];  [4];  [2]
  1. Univ. of California, Los Angeles, CA (United States); Shanghai Jiao Tong Univ. (China). State Key Lab. of Metal Matrix Composites
  2. Univ. of California, Los Angeles, CA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Shanghai Jiao Tong Univ. (China). State Key Lab. of Metal Matrix Composites
Hydrogels, exhibiting wide applications in soft robotics, tissue engineering, implantable electronics, etc., often require sophisticately tailoring of the hydrogel mechanical properties to meet specific demands. For examples, soft robotics necessitates tough hydrogels; stem cell culturing demands various tissue-matching modulus; and neuron probes desire dynamically tunable modulus. Herein, a strategy to broadly alter the mechanical properties of hydrogels reversibly via tuning the aggregation states of the polymer chains by ions based on the Hofmeister effect is reported. An ultratough poly(vinyl alcohol) (PVA) hydrogel as an exemplary material (toughness 150 ± 20 MJ m-3), which surpasses synthetic polymers like poly(dimethylsiloxane), synthetic rubber, and natural spider silk is fabricated. With various ions, the hydrogel's various mechanical properties are continuously and reversibly in situ modulated over a large window: tensile strength from 50 ± 9 kPa to 15 ± 1 MPa, toughness from 0.0167 ± 0.003 to 150 ± 20 MJ m-3, elongation from 300 ± 100% to 2100 ± 300%, and modulus from 24 ± 2 to 2500 ± 140 kPa. Importantly, the ions serve as gelation triggers and property modulators only, not necessarily required to remain in the gel, maintaining the high biocompatibility of PVA without excess ions. Overall, this strategy, enabling high mechanical performance and broad dynamic tunability, presents a universal platform for broad applications from biomedicine to wearable electronics.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Science Foundation (NSF); US Air Force Office of Scientific Research (AFOSR); US Office of Naval Research (ONR); USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1774628
Journal Information:
Advanced Materials, Journal Name: Advanced Materials Journal Issue: 11 Vol. 33; ISSN 0935-9648
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (48)

Tuning Hydrogel Mechanics Using the Hofmeister Effect journal September 2015
Hofmeister Effect-Assisted One Step Fabrication of Ductile and Strong Gelatin Hydrogels journal December 2017
Molecularly Engineered Dual-Crosslinked Hydrogel with Ultrahigh Mechanical Strength, Toughness, and Good Self-Recovery journal February 2015
Weak Hydrogen Bonding Enables Hard, Strong, Tough, and Elastic Hydrogels journal October 2015
A Universal Soaking Strategy to Convert Composite Hydrogels into Extremely Tough and Rapidly Recoverable Double-Network Hydrogels journal June 2016
A Facile Method to Fabricate Anisotropic Hydrogels with Perfectly Aligned Hierarchical Fibrous Structures journal January 2018
Hydrogel Paint journal August 2019
Spontaneously Regenerative Tough Hydrogels journal July 2019
Anion Complexation and The Hofmeister Effect journal September 2014
An Intrinsically Stretchable and Compressible Supercapacitor Containing a Polyacrylamide Hydrogel Electrolyte journal June 2017
Freezing Molecular Orientation under Stretch for High Mechanical Strength but Anisotropic Hydrogels journal July 2016
Hofmeister Effect‐Aided Assembly of Enhanced Hydrogel Supercapacitor with Excellent Interfacial Contact and Reliability journal May 2019
Ion-specific swelling of hydrophilic polymer gels journal June 2001
The effects of hyaluronic acid hydrogels with tunable mechanical properties on neural progenitor cell differentiation journal May 2010
Tuning the mechanical properties of bioreducible multilayer films for improved cell adhesion and transfection activity journal September 2010
The influence of substrate stiffness gradients on primary human dermal fibroblasts journal July 2013
Effects of substrate stiffness and cell-cell contact on mesenchymal stem cell differentiation journal August 2016
Interactions between macromolecules and ions: the Hofmeister series journal December 2006
Naturally biomimicked smart shape memory hydrogels for biomedical functions journal January 2020
Novel PVA-based polymers showing an anti-Hofmeister Series property journal July 2009
Fabrication of Bioinspired Hydrogels: Challenges and Opportunities journal April 2020
Dual-Stimuli-Responsive Polymer Composite with Ultrawide Tunable Stiffness Range Triggered by Water and Temperature journal April 2020
Mussel-Inspired Adhesive and Tough Hydrogel Based on Nanoclay Confined Dopamine Polymerization journal February 2017
Hydrogels for Tissue Engineering journal July 2001
Hofmeister Phenomena: An Update on Ion Specificity in Biology journal January 2012
Specific Ion Effects on the Water Solubility of Macromolecules:  PNIPAM and the Hofmeister Series journal October 2005
Hofmeister Salt Effects on Surface Tension Arise from Partitioning of Anions and Cations between Bulk Water and the Air−Water Interface journal May 2007
Designing hydrogels for controlled drug delivery journal October 2016
Highly stretchable and tough hydrogels journal September 2012
Beyond Hofmeister journal March 2014
Hydraulic hydrogel actuators and robots optically and sonically camouflaged in water journal February 2017
Ion-specific ice recrystallization provides a facile approach for the fabrication of porous materials journal May 2017
Tough bonding of hydrogels to diverse non-porous surfaces journal November 2015
Hydrogels with tunable stress relaxation regulate stem cell fate and activity journal November 2015
Soft and elastic hydrogel-based microelectronics for localized low-voltage neuromodulation journal January 2019
Kinetic behaviour of the cells touching substrate: the interfacial stiffness guides cell spreading journal January 2014
Multi-scale multi-mechanism design of tough hydrogels: building dissipation into stretchy networks journal January 2014
Stem cell migration and mechanotransduction on linear stiffness gradient hydrogels journal May 2017
Muscle-like fatigue-resistant hydrogels by mechanical training journal May 2019
PVA-based hydrogels for tissue engineering: A review journal June 2016
Tissue Stiffness Dictates Development, Homeostasis, and Disease Progression journal January 2015
GIXSGUI : a MATLAB toolbox for grazing-incidence X-ray scattering data visualization and reduction, and indexing of buried three-dimensional periodic nanostructured films journal April 2015
Anti-fatigue-fracture hydrogels journal January 2019
Specific ion effects directed noble metal aerogels: Versatile manipulation for electrocatalysis and beyond journal May 2019
Combinatorial screening of biochemical and physical signals for phenotypic regulation of stem cell–based cartilage tissue engineering journal May 2020
Stimuli-Responsive Polymer Nanocomposites Inspired by the Sea Cucumber Dermis journal March 2008
Erratum to: Increased microenvironment stiffness in damaged myofibers promotes myogenic progenitor cell proliferation journal September 2015
Hydrogels for Engineering of Perfusable Vascular Networks journal July 2015

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